Physics Help

Relative Velocity

Definition of Relative Velocity

Relative velocity is the vector difference between the velocities of two objects viewed from an arbitrary frame of reference.

Quick Question

When an airplane starts to fly into a wind, its speed relative to the ground decreases, and when it starts to fly with a wind its ground speed increases. What happens to the ground speed of an airplane if a wind starts to blow at 90 degrees to the direction it is pointing? Its ground speed
a. decreases
b. stays the same
c. increases
d. could do any of the aboveANSWER